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Two pressures are measured for a blood pressure reading 1  : Systolic blood pressure is a measure of blood pressure while the heart is beating. 2  Diastolic pressure is a measure of blood pressure while the heart is relaxed.
Dear Sonya, Diastolic dysfunction is an abnormality in the relaxation phase of the heart beat during which the heart is filling with blood in preparation for the next ejection. Based on findings measured by the echocardiogram, there are 3 grades: Grade 1 (mild), Grade 2 (moderate) , and Grade 3 (severe).